Sometimes it seems as if a social site appears and hundreds of articles follow along with it. In the case of Pinterest, Zach Bulygo found a mere 103 resources that he wants to share. There is lots of information in the post, but one thing marketers may not know is the wealth of funding from successful entrepreneurs and investors, including Jack Abraham, Milo founder; Michael Birch, Bebo co-founder; and Jeremy Stoppelman, Yelp co-founder.